Paleo is all about lean meats, vegetables and fruits — no sugar, grains or dairy.

“If it’s in a sack, box or can, it’s not paleo,” Dr. David Walters, a proponent of the paleo lifestyle.

What happens, then, when you’re strapped for time during the workday and the only option is a drive-through window? Bottom line: Make the best with what you’ve got.

“I’ve gotten a fast-food chicken sandwich without the bun,” said Brogan Walters, a CrossFit trainer. “It’s not good, but it’s better (than with bread).”

Other healthier — or at least less unhealthy — choices are sweet potato fries instead of regular fries and sub sandwich meat and toppings (again, no bread).

If you head to the grocery store to pick up something for lunch or dinner, there’s a simple formula to follow.

“What I tell people is when you walk into the supermarket, if you stay on the outside (aisles) you’ll hit the paleo stuff — vegetables, fruit and meat. Stick to those areas,” said Ron Leyba, a local bistro owner who has incorporated paleo meals into his own menu.